12788 Federal Register / Vol. 89, No. 34 / Tuesday, February 20, 2024 / Proposed Rules 

engine anti-ice (EAI) duct within the inlet aft 

compartment due to missing seals between 

the inner and outer ducts and between the 

outer duct and the aft compartment. The 

FAA is issuing this AD to address EAI air 

leaking into aft compartment exposing inlet 

components to high temperatures, which 

could result in damage around the EAI duct. 

This condition, if not addressed, could lead 

to reduced structural strength and departure 

of the inlet from the airplane, resulting in 

subsequent loss of continued safe flight and 

landing or injury to occupants from a 

departed inlet contacting the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified by paragraph (h) of this 

AD: At the applicable times specified in the 

‘‘Compliance’’ paragraph of Boeing Alert 

Requirements Bulletin B787–81205– 

SB540023–00 RB or B787–81205–SB540024– 

00 RB, both Issue 001 and both dated 

September 22, 2023, as applicable, do all 

applicable actions identified in, and in 

accordance with, the Accomplishment 

Instructions of Boeing Alert Requirements 

Bulletin B787–81205–SB540023–00 RB or 

B787–81205–SB540024–00 RB, both Issue 

001 and both dated September 22, 2023, as 

applicable. 

Note 1 to paragraph (g): Guidance for 

accomplishing the actions required by this 

AD can be found in Boeing Alert Service 

Bulletin B787–81205–SB540023–00, dated 

September 22, 2023, which is referred to in 

Boeing Alert Requirements Bulletin B787– 

81205–SB540023–00 RB, Issue 001, dated 

September 22, 2023. 

Note 2 to paragraph (g): Guidance for 

accomplishing the actions required by this 

AD can also be found in Boeing Alert Service 

Bulletin B787–81205–SB540024–00, dated 

September 22, 2023, which is referred to in 

Boeing Alert Requirements Bulletin B787– 

81205–SB540024–00 RB, Issue 001, dated 

September 22, 2023. 

(h) Exceptions to Service Information 

Specifications 

(1) Where the ‘‘Boeing Recommended 

Compliance Time’’ column in the tables 

under the ‘‘Compliance’’ paragraph of Boeing 

Alert Requirements Bulletin B787–81205– 

SB540023–00 RB, Issue 001, dated September 

22, 2023, use the phrase ‘‘the Issue 001 date 

of Requirements Bulletin B787–81205– 

SB540023 RB,’’ this AD requires using the 

effective date of this AD. 

(2) Where the ‘‘Boeing Recommended 

Compliance Time’’ columns in the tables 

under the ‘‘Compliance’’ paragraph of Boeing 

Alert Requirements Bulletin B787–81205– 

SB540024–00 RB, Issue 001, dated September 

22, 2023, use the phrase ‘‘the Issue 001 date 

of Requirements Bulletin B787–81205– 

SB540024 RB,’’ this AD requires using the 

effective date of this AD. 

(3) Where Boeing Alert Requirements 

Bulletin B787–81205–SB540023–00 RB, Issue 

001, dated September 22, 2023, and Boeing 

Alert Requirements Bulletin B787–81205– 

SB540024–00 RB, Issue 001, dated September 

22, 2023, specify contacting Boeing for repair 

instructions, this AD requires doing the 

repair before further flight, using a method 

approved in accordance with the procedures 

specified in paragraph (k) of this AD. 

(i) Parts Installation Prohibition 

After accomplishment of all applicable 

actions required by paragraph (g) of this AD 

on an airplane, no person may install on that 

airplane any engine inlet that meets a 

condition specified in paragraph (i)(1) or (2) 

of this AD, unless the engine inlet has been 

inspected and applicable corrective actions 

taken as specified in Boeing Alert 

Requirements Bulletin B787–81205– 

SB540023–00 RB, Issue 001, dated September 

22, 2023; or Boeing Alert Requirements 

Bulletin B787–81205–SB540024–00 RB, Issue 

001, dated September 22, 2023. 

(1) If the engine inlet was installed on an 

airplane that was dispatched under a 

dispatch deviation for the operator’s existing 

minimum equipment list (MEL) item 30–21– 

01–02 or 30–21–01–07 prior to incorporation 

of Boeing 787 Dispatch Deviation Guide 

(DDG) 30–21–01–02, as required by this AD. 

(2) If the engine inlet was installed on an 

airplane for which dispatch under a dispatch 

deviation for the operator’s existing MEL 

item 30–21–01–02 or 30–21–01–07 prior to 

incorporation of Boeing 787 DDG 30–21–01– 

02, as required by this AD, cannot be 

determined. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, AIR–520, Continued 

Operational Safety Branch, FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to the attention of the person 

identified in paragraph (k) of this AD. 

Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by The Boeing Company 

Organization Designation Authorization 

(ODA) that has been authorized by the 

Manager, AIR–520, Continued Operational 

Safety Branch, FAA, to make those findings. 

To be approved, the repair method, 

modification deviation, or alteration 

deviation must meet the certification basis of 

the airplane, and the approval must 

specifically refer to this AD. 

(k) Related Information 

For more information about this AD, 

contact Tak Kobayashi, Aviation Safety 

Engineer, FAA, 2200 South 216th St., Des 

Moines, WA 98198; telephone 206–231– 

3553; email takahisa.kobayashi@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Boeing Alert Requirements Bulletin 

B787–81205–SB540023–00 RB, Issue 001, 

dated September 22, 2023. 

(ii) Boeing Alert Requirements Bulletin 

B787–81205–SB540024–00 RB, Issue 001, 

dated September 22, 2023. 

(3) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110–SK57, Seal Beach, CA 90740–5600; 

telephone 562–797–1717; website 

myboeingfleet.com. 

(4) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 216th 

St., Des Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(5) You may view this material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

ibr-locations or email fr.inspection@nara.gov. 

Issued on February 12, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–03254 Filed 2–16–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–1650; Project 

Identifier MCAI–2022–00210–T] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Canada Limited Partnership (Type 

Certificate Previously Held by C Series 

Aircraft Limited Partnership (CSALP); 

Bombardier, Inc.) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (SNPRM). 

SUMMARY: The FAA is revising a notice 

of proposed rulemaking (NPRM) and an 

SNPRM that would have applied to 

certain Airbus Canada Limited 

Partnership Model BD–500–1A11 

airplanes. This action revises the 

SNPRM by adding airplanes. The FAA 

is proposing this airworthiness directive 

(AD) to address the unsafe condition on 


ddrumheller on DSK120RN23PROD with PROPOSALS1
Federal Register / Vol. 89, No. 34 / Tuesday, February 20, 2024 / Proposed Rules 12789 

these products. Since these actions 

would impose an additional burden 

over those in the NPRM and previous 

SNPRM, the FAA is requesting 

comments on this SNPRM. 

DATES: The FAA must receive comments 

on this SNPRM by April 5, 2024. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

regulations.gov. Follow the instructions 

for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2022–1650; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains the notice of proposed 

rulemaking (NPRM), original SNPRM, 

this SNPRM, the mandatory continuing 

airworthiness information (MCAI), any 

comments received, and other 

information. The street address for 

Docket Operations is listed above. 

Material Incorporated by Reference: 

• For Transport Canada material that 

is proposed for incorporation by 

reference in this SNPRM, contact 

Transport Canada, Transport Canada 

National Aircraft Certification, 159 

Cleopatra Drive, Nepean, Ontario K1A 

0N5, Canada; telephone 888–663–3639; 

email TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca; 

website tc.canada.ca/en/aviation. It is 

also available at regulations.gov under 

Docket No. FAA–2022–1650. 

• For Airbus Canada Limited 

Partnership material that is proposed for 

incorporation by reference in this 

SNPRM, contact Airbus Canada Limited 

Partnership, 13100 Henri-Fabre 

Boulevard, Mirabel, Que ́bec, J7N 3C6, 

Canada; telephone 450–476–7676; email 

a220_crc@abc.airbus; website 

a220world.airbus.com. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, 

call 206–231–3195. 

FOR FURTHER INFORMATION CONTACT: 

Steven Dzierzynski, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; 

telephone 516–228–7300; email 9-avsnyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2022–1650; Project Identifier 

MCAI–2022–00210–T’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend this proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this SNPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this SNPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this SNPRM, it is 

important that you clearly designate the 

submitted comments as CBI. Please 

mark each page of your submission 

containing CBI as ‘‘PROPIN.’’ The FAA 

will treat such marked submissions as 

confidential under the FOIA, and they 

will not be placed in the public docket 

of this SNPRM. Submissions containing 

CBI should be sent to Steven 

Dzierzynski, Aviation Safety Engineer, 

FAA, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7300; email 9-avs-nyaco-cos@

faa.gov. Any commentary that the FAA 

receives which is not specifically 

designated as CBI will be placed in the 

public docket for this rulemaking. 

Background 

The FAA issued an NPRM to amend 

14 CFR part 39 by adding an AD that 

would apply to certain Airbus Canada 

Limited Partnership Model BD–500– 

1A11 airplanes. The NPRM published in 

the Federal Register on December 20, 

2022 (87 FR 77763). The NPRM was 

prompted by AD CF–2022–04, dated 

February 14, 2022, issued by Transport 

Canada, which is the aviation authority 

for Canada (Transport Canada AD CF– 

2022–04). Transport Canada AD CF– 

2022–04 states that the nose radome 

lightning diverter strips on certain 

aircraft were painted in production; 

paint on the diverter strips can 

compromise the nose radome lightning 

protection. Reduced effectiveness of the 

diverter strips can lead to the puncture 

of the nose radome by lightning and 

potential arc attachment to antennas, 

structures, and other equipment in the 

area of the nose radome. The unsafe 

condition, if not addressed, could result 

in damage to the localizer or glideslope 

antennas, and consequent loss of 

instrument landing system localizer 

inputs or deviation information. 

In the NPRM, the FAA proposed to 

require inspecting for paint on the 

diverter strips on the nose radome, and 

replacing the nose radome, if necessary, 

as specified in Transport Canada AD 

CF–2022–04. 

The FAA issued an SNPRM to amend 

14 CFR part 39 by adding an AD that 

would apply to certain Airbus Canada 

Limited Partnership Model BD–500– 

1A11 airplanes. The SNPRM published 

in the Federal Register on July 14, 2023 

(88 FR 45102). The SNPRM was 

prompted by a determination that the 

applicability should be revised because 

the affected nose radomes may be 

installed as rotable spares on airplanes 

outside of the applicability of the 

NPRM, thereby subjecting those 

airplanes to the identified unsafe 

condition. In the SNPRM, the FAA 

proposed to expand the applicability to 

apply to airplanes equipped with 

specific part numbers and serial 

numbers of nose radomes. 

Actions Since the SNPRM Was Issued 

Since the FAA issued the SNPRM, the 

FAA determined that the applicability 

of the proposed AD should be revised. 

The FAA has determined that the 

affected nose radomes may be installed 

as rotable spares on the Airbus Canada 

Limited Partnership Model BD–500– 

1A10 airplane model, which is currently 

outside of the applicability of the NPRM 

and SNPRM, thereby subjecting those 

airplanes to the identified unsafe 

condition. Therefore, this proposed AD 

has been expanded to apply to Model 

BD–500–1A10 airplanes, as well as 

Model BD–500–1A11 airplanes, 

equipped with the specific part numbers 

and serial numbers previously 


ddrumheller on DSK120RN23PROD with PROPOSALS1
12790 Federal Register / Vol. 89, No. 34 / Tuesday, February 20, 2024 / Proposed Rules 

addressed. The FAA is proposing this 

AD to address reduced effectiveness of 

the diverter strips, which could result in 

damage to the localizer or glideslope 

antennas, and consequent loss of 

instrument landing system localizer or 

deviation information. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2022–1650. 

Comments 

The FAA received comments from the 

Air Line Pilots Association, 

International (ALPA), who supported 

the SNPRM without change. 

The FAA received additional 

comments from Delta Airlines. The 

following presents the comments 

received on the SNPRM and the FAA’s 

response to each comment. 

Request for Change to Applicability 

Delta requested the proposed 

applicability be changed to include 

Model BD–500–1A10 airplanes. Delta 

stated that the nose radome is a rotable 

component that is also compatible with 

Model BD–500–1A10 airplanes, as 

specified in the A220 Illustrated Parts 

Data Publication (IPDP), and may be 

moved from the original Model BD– 

500–1A11 airplane to a Model BD–500– 

1A10 airplane over time. 

The FAA agrees with the request to 

include Model BD–500–1A10 airplanes 

to the applicability in this proposed AD 

after verifying with Transport Canada 

that this model aircraft is affected by the 

unsafe condition. The FAA has revised 

paragraph (c) of this proposed AD 

accordingly. 

Request for Revision of Affected Part 

Numbers and Serial Numbers 

Delta requested the removal of the 

following part numbers from paragraph 

(i) of the proposed AD (in the SNPRM): 

C01204101–003, C01204101–005, 

C01204101–011. Delta also requested 

that paragraph (i) of the proposed AD 

(in the SNPRM) be revised to include 

the following serial numbers: S456997, 

S570556, S626945, S866894, T099675, 

T471773, T595935. Delta stated that 

Airbus Canada confirmed only the 

radomes having part and serial numbers 

specified in paragraph (c) of the 

proposed AD (in the SNPRM) are 

affected by the unsafe condition. 

The FAA agrees with the request for 

the reasons provided, and has revised 

paragraph (i) of this proposed AD 

accordingly. 

Request for Correction to Issue Date on 

Reference Material 

Delta requested the review and, if 

applicable, correction to the reference 

issuance date of SB BD500–538009, 

Issue 001 in paragraph (j) of the 

proposed AD (in the SNPRM). Delta 

stated that it believes the issuance date 

should be May 9, 2022. 

The FAA agrees with Delta’s request 

to correct the issuance date of SB 

BD500–538009, Issue 001 from April 8, 

2022 to May 9, 2022, and has revised 

paragraph (j) of this proposed AD 

accordingly. 

Related Service Information Under 1 

CFR Part 51 

Transport Canada AD CF–2022–04 

specifies procedures for inspecting for 

paint on the lightning diverter strips on 

the nose radome, and replacing the nose 

radome if the lightning diverter strips 

are painted. 

The FAA also reviewed Airbus 

Canada Limited Partnership A220 

Service Bulletin BD500–538009, Issue 

002, dated June 2, 2022. This service 

information specifies procedures for 

inspecting for paint on the lightning 

diverter strips on the nose radome, and 

replacing and painting the nose radome 

if the lightning diverter strips are 

painted. 

This material is reasonably available 

because the interested parties have 

access to it through their normal course 

of business or by the means identified 

in ADDRESSES. 

FAA’s Determination 

This product has been approved by 

the aviation authority of another 

country and is approved for operation in 

the United States. Pursuant to the FAA’s 

bilateral agreement with this State of 

Design Authority, it has notified the 

FAA of the unsafe condition described 

in the MCAI and service information 

referenced above. The FAA is issuing 

this SNPRM after determining that the 

unsafe condition described previously is 

likely to exist or develop in other 

products of the same type design. 

Certain changes described above 

expand the scope of the SNPRM. As a 

result, it is necessary to reopen the 

comment period to provide additional 

opportunity for the public to comment 

on this SNPRM. 

Proposed AD Requirements in This 

SNPRM 

This proposed AD would require 

accomplishing the actions specified in 

Transport Canada AD CF–2022–04 

described previously, except for any 

differences identified as exceptions in 

the regulatory text of this proposed AD. 

Explanation of Required Compliance 

Information 

In the FAA’s ongoing efforts to 

improve the efficiency of the AD 

process, the FAA developed a process to 

use some civil aviation authority (CAA) 

ADs as the primary source of 

information for compliance with 

requirements for corresponding FAA 

ADs. The FAA has been coordinating 

this process with manufacturers and 

CAAs. As a result, the FAA proposes to 

incorporate Transport Canada AD CF– 

2022–04 by reference in the FAA final 

rule. This proposed AD would, 

therefore, require compliance with 

Transport Canada AD CF–2022–04 in its 

entirety through that incorporation, 

except for any differences identified as 

exceptions in the regulatory text of this 

proposed AD. Service information 

required by Transport Canada AD CF– 

2022–04 for compliance will be 

available at regulations.gov under 

Docket No. FAA–2022–1650 after the 

FAA final rule is published. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 7 

airplanes of U.S. registry. The FAA 

estimates the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

6 work-hours × $85 per hour = $510 .......................................................................................... $0 * $510 $3,570 

* The FAA has received no definitive data on which to base the parts cost estimate for the nose radome replacement. 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some or all 

of the costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

operators. 


ddrumheller on DSK120RN23PROD with PROPOSALS1
Federal Register / Vol. 89, No. 34 / Tuesday, February 20, 2024 / Proposed Rules 12791 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

The FAA determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would not 

have a substantial direct effect on the 

States, on the relationship between the 

national Government and the States, or 

on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

Airbus Canada Limited Partnership (Type 

Certificate Previously Held by C Series 

Aircraft Limited Partnership (CSALP); 

Bombardier, Inc.): Docket No. FAA– 

2022–1650; Project Identifier MCAI– 

2022–00210–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by April 5, 

2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus Canada Limited 

Partnership Model BD–500–1A10 and BD– 

500–1A11 airplanes, certificated in any 

category, with a nose radome having part 

number (P/N) C01204101–007 or P/N 

C01204101–009 and a serial number (S/N) 

S456997, S/N S570556, S/N S626945, S/N 

S866894, S/N T099675, S/N T471773, or S/ 

N T595935. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 53, Fuselage. 

(e) Unsafe Condition 

This AD was prompted by a report that the 

nose radome lightning diverter strips on 

certain aircraft were painted in production; 

paint on the diverter strips can compromise 

the nose radome lightning protection. The 

FAA is issuing this AD to address reduced 

effectiveness of the diverter strips, which can 

lead to the puncture of the nose radome by 

lightning and potential arc attachment to 

antennas, structures, and other equipment in 

the area of the nose radome. The unsafe 

condition, if not addressed, could result in 

damage to the localizer or glideslope 

antennas, and consequent loss of instrument 

landing system localizer inputs or deviation 

information. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, Transport Canada AD CF– 

2022–04, dated February 14, 2022 (Transport 

Canada AD CF–2022–04). 

(h) Exception to Transport Canada AD CF– 

2022–04 

(1) Where Transport Canada AD CF–2022– 

04 refers to its effective date, this AD requires 

using the effective date of this AD. 

(2) Where Transport Canada AD CF–2022– 

04 specifies removing and installing a nose 

radome using certain aircraft maintenance 

publication data modules, this AD also 

allows accomplishing those actions in 

accordance with Airbus Canada Limited 

Partnership A220 Service Bulletin BD500– 

538009, Issue 002, dated June 2, 2022, with 

the exception that the painting of the nose 

radome can be accomplished prior to 

installation, and that the following nose 

radome assembly part numbers may be used: 

P/N C01204101–003, P/N C01204101–005, P/ 

N C01204101–007, P/N C01204101–009, and 

P/N C01204101–011. 

(i) Parts Installation Limitation 

As of the effective date of this AD, no 

person may install, on any airplane, a nose 

radome having part number (P/N) 

C01204101–007 or P/N C01204101–009 and 

a serial number (S/N) S456997, S/N S570556, 

S/N S626945, S/N S866894, S/N T099675, S/ 

N T471773, or S/N T595935 unless the 

actions required by paragraph (g) of this AD 

have been accomplished on the nose radome. 

(j) Credit for Previous Actions 

This paragraph provides credit for actions 

required by paragraph (g) of this AD, if those 

actions were performed before the effective 

date of this AD using Airbus Canada Limited 

Partnership A220 Service Bulletin BD500– 

538009, Issue 001, dated May 9, 2022. 

(k) Additional AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Validation Branch, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

In accordance with 14 CFR 39.19, send your 

request to your principal inspector or 

responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, mail it to the address identified in 

paragraph (l)(1) of this AD. Information may 

be emailed to: 9-AVS-NYACO-COS@faa.gov. 

Before using any approved AMOC, notify 

your appropriate principal inspector, or 

lacking a principal inspector, the manager of 

the responsible Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, International Validation 

Branch, FAA; or Transport Canada; or Airbus 

Canada Limited Partnership’s Transport 

Canada Design Approval Organization 

(DAO). If approved by the DAO, the approval 

must include the DAO-authorized signature. 

(3) Required for Compliance (RC): Except 

as required by paragraph (k)(2) of this AD, if 

any service information contains procedures 

or tests that are identified as RC, those 

procedures and tests must be done to comply 

with this AD; any procedures or tests that are 

not identified as RC are recommended. Those 

procedures and tests that are not identified 

as RC may be deviated from using accepted 

methods in accordance with the operator’s 

maintenance or inspection program without 

obtaining approval of an AMOC, provided 

the procedures and tests identified as RC can 

be done and the airplane can be put back in 

an airworthy condition. Any substitutions or 

changes to procedures or tests identified as 

RC require approval of an AMOC. 


ddrumheller on DSK120RN23PROD with PROPOSALS1
12792 Federal Register / Vol. 89, No. 34 / Tuesday, February 20, 2024 / Proposed Rules 

(l) Additional Information 

(1) For more information about this AD, 

contact Steven Dzierzynski, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 516– 

228–7300; email 9-avs-nyaco-cos@faa.gov. 

(2) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (m)(4) and (5) of this AD. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) Airbus Canada Limited Partnership 

A220 Service Bulletin BD500–538009, Issue 

002, dated June 2, 2022. 

(ii) Transport Canada AD CF–2022–04, 

dated February 14, 2022. 

(3) For Transport Canada AD CF–2022–04, 

contact Transport Canada, Transport Canada 

National Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario K1A 0N5, Canada; 

telephone 888–663–3639; email 

TC.AirworthinessDirectives-Consignesde

navigabilite.TC@tc.gc.ca; website 

tc.canada.ca/en/aviation. 

(4) For Airbus Canada Limited Partnership 

material incorporated by reference in this 

AD, contact Airbus Canada Limited 

Partnership, 13100 Henri-Fabre Boulevard, 

Mirabel, Que ́bec, J7N 3C6, Canada; telephone 

450–476–7676; email a220_crc@abc.airbus; 

website a220world.airbus.com. 

(5) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 216th 

St., Des Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(6) You may view this material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

ibr-locations, or email fr.inspection@

nara.gov. 

Issued on February 12, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–03253 Filed 2–16–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–0232; Project 

Identifier MCAI–2023–00353–R] 

RIN 2120–AA64 

Airworthiness Directives; Bell Textron 

Canada Limited Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Bell Textron Canada Limited 

Model 407 helicopters. This proposed 

AD was prompted by a report that a 

certain part-numbered fuel system 

standpipe assembly (standpipe) may 

have sharp edges at the interval weld 

joints due to a quality escape during the 

manufacturing process. This proposed 

AD would require inspecting certain 

fuel system parts and, depending on the 

inspection results, taking corrective 

actions and performing a fuel quantity 

gauging system calibration. Depending 

on the results of the fuel quantity 

gauging system calibration, this 

proposed AD would require performing 

additional corrective action and 

repeating the fuel quantity gauging 

system calibration. The FAA is 

proposing this AD to address the unsafe 

condition on these products. 

DATES: The FAA must receive comments 

on this NPRM by April 5, 2024. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

regulations.gov. Follow the instructions 

for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–0232; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this NPRM, any comments 

received, and other information. The 

street address for Docket Operations is 

listed above. 

Material Incorporated by Reference: 

• For service information identified 

in this NPRM, contact Bell Textron 

Canada Limited, 12,800 Rue de l’Avenir, 

Mirabel, Quebec J7J 1R4, Canada; phone 

1–450–437–2862 or 1–800–363–8023; 

fax 1–450–433–0272; email product

support@bellflight.com; or at 

bellflight.com/support/contact-support. 

• You may view this service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 

10101 Hillwood Pkwy., Room 6N 321, 

Fort Worth, TX 76177. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. 

FOR FURTHER INFORMATION CONTACT: 

Michael Hughlett, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; phone: 

(817) 222–5889; email: michael.

hughlett@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2024–0232; Project Identifier 

MCAI–2023–00353–R’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend this proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this NPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 


ddrumheller on DSK120RN23PROD with PROPOSALS1